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Calculate the partial pressure of propane in a mixture that contains equal masses of propane (C3H8) and butane (C4H10) at 20.0 °C and 738 mm Hg.
Design a qualitative analysis scheme
How much energy is required to vaporize 48.7 g of dichloromethane (CH2Cl2) at its boiling point, if its ?Hvap is 31.6 kJ/mol?
How much heat is evolved when 1259 g of water condenses to a liquid at 100°C? ΔHcond = -40.7 kJ/mol.
An environmental chemist needs a carbonate buffer of pH 10.00 to study the effects of acid rain on limestonerich soils. How many grams of Na2CO3 must she add to 1.5 L of freshly prepared 0.20 M NaHCO3 to make the buffer? KA of HCO3- is 4.7 x 10-1..
.20g of methyl alcohol, CH3OH, are dissolved in 16.8g of water, H2O. What is the mole fraction of the solute.
A 2.00 liter vessel is ?lled with NH3(g) to a pressure of 4.00 atm and the reaction N2(g) + 3 H2(g) ?? 2 NH3(g) comes to equilibrium at a ?xed temperature.
Determine the molar mass of the compound if boiling point constant for CCl 4 =4.95 K · kg/mol.?
Determine what will be the major product expected from chronological treatment of propylbenzene with 1) KMnO 4 , 2) 3)H 3 O + , Cl 2 and FeCl 3 , and iv) Br 2 and FeBr 3 ?
A sample of H½O with a mass of 46.0 grams has a temperature of -58.0 C. How many joules of energy are necessary to melt 46.0 grams of ice? (Use 2.1 J/g.C for the specific heat of ice, and 334.4 J/g for the heat of fusion of water.)
A certain first-order reaction has a rate constant of 1.00x10-3 s-1. How long will it take for the reactant concentration to drop to 1/8 of its initial value?
Determine the ion notation for an atom with 18 electrons and 20 protons
Find the partial pressure and concentration of Nitrogen, Oxygen, and Carbon dioxide.
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